In this blog post, we will go through the steps required to configure IKEv2 tunnel-based VPN on the ASA firewalls. set net-device disable On the New Network Object window, specify the name of the object and choose accordingly host/network/range/FQDN. Im sure! For further clarification, contact Microsoft Azure support. VPN tunnel is not yet established but is in negotiation. Cisco ASA: Route-Based VPN - YouTube 0:00 / 9:39 Cisco ASA: Route-Based VPN 6,196 views Jun 5, 2020 Within the Oracle Cloud Infrastructure, an IPSec VPN connection is one of the. Life/Active Time: 86400/53 sec Can be used on newer Cisco Firewalls (ASA 5506-x, 5508-X, 5512-x, 5515-x, 5516-x, 5525-X, 5545-X, 5555-x, 5585-X). These 2 Commands has to be executed to allow inbound traffic. Configuration of VPN Between R1 and R2. Cisco ASA 5525-X 8-Port Firewall Adaptive Security Appliance. Subscription: Your subscription Location: Typically your virtual networks location. Click Save . If you are a networking type its part of the virtual network, but is more specific than the subnet you already created.. auto-negotiate: disable Packetswitch Suresh Vina. does this solve the problem on having Azure use On-Prem network for the internet? replay: enabled In this example Node A is used as the local subnets to the FTD. next It is mandatory to procure user consent prior to running these cookies on your website. set src-name all set dst-addr-type name Required fields are marked *. For a site-to-site IKEv2 VPN on ASA with crypto maps, follow this configuration. Step 12. >. This document from Microsoft describes the configuration of UsePolicyBasedTrafficSelectors in conjunction with Route-Based Azure VPN mode. Traditionally, the ASA has been a policy-based VPN which in my case, is extremely outdated. Add an IKEv2 phase 2 IPsec Proposal. Configure the IPsec policy or phase 2 parameters. e1831416107c6ca5c1d6da624269ba4e21b7d45c95d5a16da8c0f9200b598ebbab76f5b9, 3d6e5ab8c1ac1de02a230095d76778dd5b88aeeff7dfae8b25df26c265bdec56710d040e, # show crypto ipsec sa peer 194.247.4.10 detail, #pkts encaps: 29, #pkts encrypt: 29, #pkts digest: 29, #pkts decaps: 45, #pkts decrypt: 45, #pkts verify: 45, #pkts compressed: 0, #pkts decompressed: 0, #pkts not compressed: 29, #pkts comp failed: 0, #pkts decomp failed: 0, #pre-frag successes: 0, #pre-frag failures: 0, #fragments created: 0, #PMTUs sent: 0, #PMTUs rcvd: 0, #decapsulated frgs needing reassembly: 0, #Valid ICMP Errors rcvd: 0, #Invalid ICMP Errors rcvd: 0, #pkts no sa (send): 0, #pkts invalid sa (rcv): 0, #pkts encaps failed (send): 0, #pkts decaps failed (rcv): 0, #pkts invalid prot (rcv): 0, #pkts verify failed: 0, #pkts invalid identity (rcv): 0, #pkts invalid len (rcv): 4009213712, #pkts invalid ip version (send): 0, #pkts invalid ip version (rcv): 0, #pkts invalid len (send): 0, #pkts invalid len (rcv): 0, #pkts invalid ctx (send): 0, #pkts invalid ctx (rcv): 0, #pkts invalid ifc (send): 0, #pkts invalid ifc (rcv): 0, #pkts failed (send): 0, #pkts failed (rcv): 0, #pkts replay rollover (send): 0, #pkts replay rollover (rcv): 0, #pkts min mtu frag failed (send): 0, #pkts bad frag offset (rcv): 0, #pkts internal err (send): 0, #pkts internal err (rcv): 0, Route-Based VPN Tunnel FortiGate Cisco ASA. For further clarification, contact Microsoft Azure support. So, I managed to accomplish this y enabling BGP in all branch tunnels. Create an IKEv2 policy that defines the algorithms/methods to be used for hashing, authentication, DH group, PRF, lifetime, and encryption. integrity null To summarize from the ASA and FTD configuration perspective: Cisco recommends that you have knowledge of these topics: The information in this document is based on these software and hardware versions: The information in this document was created from the devices in a specific lab environment. For further clarification contact Microsoft Azure support. IKEv2 attribute information from Microsoft that conflicts is, Microsoft has published information that conflicts with regards to the particular phase 2 IPSec encryption and integrity attributes used by Azure. (To represent your Cisco ASA). Step 5. https://www.cisco.com/c/en/us/td/docs/security/asa/asa98/configuration/vpn/asa-98-vpn-config/vpn-vti.html. On the command-line interface, the VPN configuration looks the same as the one for ASA devices. In this example, the traffic of interest is the traffic from the tunnel that is sourced from the 10.2.2.0 subnet to 10.1.1.0. $129.99. The tunnel is created between the public IPs, not the private VTI ones. We'll assume you're ok with this, but you can opt-out if you wish. next I'm very excited to start blogging and share with you insights about my favourite Networking, Cloud and Automation topics. Click on the Add VPN dropdown menu and choose Firepower Threat Defense device . Add an IKEv2 phase 2 IPsec Proposal. Specify the name of the policy and its desired parameters for ESP Encryption and ESP Hash algorithms and click Save . In Azure, I have two networks (on-prem) defined in the local network gateway. set interface port1 Learn about Cisco ASAv route based VPN (Demo connecting AWS and Azure) - YouTube Learn about Cisco ASAv route based VPN (Demo connecting AWS and Azure) Anubhav Swami 1.26K. In the Azure portal. Wow man, after a hard night you saved me from doing something bad Thanks a lot, perfect! Policy-based local traffic selectors and remote traffic selectors identify what traffic to encrypt over IPSec. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age, disability, gender, racial identity, ethnic identity, sexual orientation, socioeconomic status, and intersectionality. Theres No ACL to Allow the Traffic, or an Interesting Traffic ACL? You can also verify that datapasses over the tunnel through a check of the vpn-sessiondb l2l entries: Bytes Tx: and Bytes Rx: show sent and received data counters over the IPSec SA. Finally create the VPN > Select your Virtual Network Gateway > Connections > Add. Knowledge of FMC for FTD management and configuration. High Availability is one of the most crucial requirements for a smooth network operation. Exceptions may be present in the documentation due to language that is hardcoded in the user interfaces of the product software, language used based on RFP documentation, or language that is used by a referenced third-party product. Requires Cisco ASA OS 9.7(1) So noASA 5505, 5510, 5520, 5550, 5585 firewalls can use this. On the New Network Object window, specify the name of the object and choose accordingly host/range/network/FQDN and click Save . Route-based tunnels are preferred when creating a site-to-site VPN tunnel to Azure. Specify the security parameters in the crypto IPsec ikev2 ipsec-proposal configuration mode: Note:Microsoft has published information that conflicts with regards to the particular phase 2 IPSec encryption and integrity attributes used by Azure. Pete, thanks for this great article. For further clarification, contact Microsoft Azure support. Learn more about how Cisco is using Inclusive Language. Best Ive seen!! address, and it works fine, (think of it like a local loopback address, though do note the difference to the last octet in the route statement!). Just configure the remote router, group name, username /password and you are ready to go.The policy is then implemented in the configuration interface for each . Step 1. Can be used on older Cisco Firewalls (ASA 5505, 5510, 5520, 5550, 5585). set snmp-index 8 set vdom root status: established 453-452s ago = 190ms Create a tunnel group under the IPsec attributes and configure the peer IP address and the IKEv2 local and remote tunnel pre-shared key: Step 4. On the Network Objects window, click on the green plus button next to the Available Networks text to create a new local traffic selector object. Also, verify the output-interface is correct - it must be either the physical interface where the crypto map is applied or the virtual tunnel interface. Step 2. DPD sent/recv: 00000001/00000001, fortigate1 # get vpn ipsec tunnel name KG-Main, gateway Hi Pete. end The sample configuration connects a Cisco ASA device to an Azure route-based VPN gateway. Please note that these policies should match on both sides. encryption aes-gcm-256 The tunnel interface on the Forti is added during the VPN setup automatically. Now you need to create a Local Security Gateway. Ensure that Azure is configured for route-based VPNand do notconfigure UsePolicyBasedTrafficSelectors in the Azure portal. Click on the Authentication Type dropdown menu, and choose Pre-shared manual key . Thats correct, you dont need any, (unless you apply an access-list to the the tunnel interface). A collection of articles focusing on Networking, Cloud and Automation. You no longer have to keep track of all remote subnets and include them in the crypto map access list. Four packets are sent and four are received over the IPSec SA with no errors. The previously configured ikev2 phase 2 IPSec proposal, The phase 2 IPSec lifetime (optional) in seconds and/or kilobytes, A new tunnel interface number: interface tunnel [number], A new tunnel interface name: nameif [name], A non-existent IP address to exist on the tunnel interface: ip address [ip-address] [mask], Tunnel source interface where the VPN terminates locally: tunnel source interface [int-name], The Azure gateway IP address: tunnel destination [Azure Public IP], The IPSec profile to use for this VTI: tunnel protection ipsec profile [profile-name]. The attributes listed are provided best effort from, . peer-auth: no Wheres the Crypto Map? I've used a mixture of both policy-based and route-based VPNs but my preference has always been the latter. Mmm Id typically hairpin a remote site onto another site to site VPN? The information that conflicts phase 2 IPSecattribute from Microsoft isvisible here. The encryption domain is set to encrypt only specific IP ranges for both source and destination. . The IP addresses range IPSec allowsto participate in the VPN tunnel.The encryption domain is defined with the use of a local traffic selector and remote traffic selector to specify what local and remote subnet ranges are captured and encrypted by IPSec. Enable IKEv1 on the outside interface. (, SHA-512 (you could use SHA-256 if you like), SHA-512 (again, you can use SHA-256 as well). Fullikev1 debug procedure and analysis can be foundhere. spi: 8185487b Take note/change the values in red accordingly; To test we usually use ping, the problem with that is, if you are using Windows Servers they will have their Windows firewall on by default, which blocks pings, (bear this in mind when testing). A VTI is configured on the ASA. Route-Based VPN from SRX to Cisco ASA with Static NAT. Type the name of the device (locally significant only) and its IP address. This website uses cookies to improve your experience. The encryption domain is set to allow any traffic which enters the IPsec tunnel. IPsec SA created: 1/1 established: 1/1 time: 0/0/0 ms, id/spi: 122 804a845040348628/43b80f11e4259ad4 You cant change the name, (you could before, then it wouldnt work, which was strange, but I suppose its fixed now) >put in another network thats part of the Virtual-Network, but does not overlap with the subnet you created in the previous step > OK. All Services > Virtual Network Gateways > Create Virtual Network Gateway > Name it > Route Based> Create New Public IP > Give it a Name > Create. Route-based VPN allows you to possibly use dynamic routing protocols such as OSPF, EIGRP though it seems like ASA only supports BGP over VTI with the IOS version 9.8. Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Hi Pete. Please try again. set interface port1 Connect to the ASAand create a set of IPSec and IKEv2 proposals. Create a NAT exemption rule: After you complete the configuration on both ASA and the Azure gateway, Azure initiates the VPN tunnel. Create two objects that have the local and remote subnets and use them for both the crypto ACL and the NAT statements. I published a tutorial on how to set up an IPsec VPN tunnel between a FortiGate firewall and a Cisco ASA. Select Cisco ASA 3DES/AES License in the Product list, and click Next. Each site has its own Internet connection. These came first, essentially they work like this, If traffic is destined for remote network (x) then send the traffic encrypted to local security gateway (y). Note: Where Local Security Gateway is a firewall at YOUR site, NOT in Azure! Important. This article contains a configuration example of a site-to-site, route-based VPN between a Juniper Networks SRX and Cisco ASA device. tunnel protection ipsec profile ipsec-prop-vpn, crypto ipsec ikev2 ipsec-proposal AES-256-GCM Reference this Cisco document for full ASA IKEv2 with crypto map configuration information. Of course that Gateway VPN Subnet is a mystery and it is hard to see what is actually taken on that subnet and what is available. Note:Microsoft has published information that conflicts with regards to the particular IKEv2 phase 1encryption, integrity, and lifetime attributes used by Azure. Ensure that Azure is configured for route-based VPN and UsePolicyBasedTrafficSelectors must be configured in the Azure portal through the use of PowerShell. When configured, this requires you to define a custom IPSec Policy in Azure for the connection and then apply the policy and the Use Traffic Policy Selectors option to the connection. ASA Route Based VPN Route based VPN Last Updated: [last-modified] (UTC) Introduction As discussed in the Policy Based VPN article, the ASA's do not use tunnel interfaces for a site-to-site VPN. remote selector 0.0.0.0/0 255.255.255.255/65535 Double-check the crypto configuration and packet drops. Encryption domain for policy-based tunnels after reconfiguring Azure all broken. Peteare you saying a GRE tunnel is created between the vti and the outside inteface ? We will be using the following setup in this article: Step-by-step guide interface: port1 (3) When an authenticated encryption algorithm (AES-GCM in our case) is used with IKE, you need to configure a Pseudo-Random Function (PRF) instead of an Integrity. The second part is that both these features . R1#conf t Enter configuration commands, one per line. I had an issue with encaps (=0) and decaps(=..) packets. Thoughts? end backgroud: my tunnel was working without tunnel interface with a different internet link. I do have a question to you. For the encryption algorithm, AES-GCM provides the strongest security and has built-in authentication, so you must set integrity to none if you select aes-256-gcm or aes-128-gcm encryption. On the Create New VPN Topology window, navigate to the Node B section and click the green plus button to add the remote endpoint traffic selector. proposal: aes256gcm next Finally create the VPN > Select your Virtual Network Gateway > Connections > Add. Create an access list that defines the traffic to be encrypted and tunneled. Sorry, something went wrong. Microsoft Article: Said 9.2 or above RichardjGreen: Said 8.4 or above it: Said 9.8.2 (tested) This category only includes cookies that ensures basic functionalities and security features of the website. Possibly through Azure PowerShell that information could be retrieved. I am using a Palo Alto Networks PA-220 with PAN-OS 10.0.2 and a Cisco ASA 5515 with version 9.12 (3)12 and ASDM 7.14 (1). Specify Extranet for all VPN peer endpoints that are not managed by the same FMC as Node A. ), And some screenshots from the ASA: (the third one showing the logs after a manual logout), PS: Sorry for being legacy IP only this time. Step 1. Ensure that the VPN traffic is not subjected to any other NAT rule. End with CNTL/Z. 2858489959 1.1.1.1/4500 2.2.2.2/4500 READY INITIATOR On the IKEv1 IPSec Proposal window, click the green plus button to add a new one. !!!!! Give the tunnel a name > Site-to-Site IPSec > Select your Local Network Gateway (ASA) > Create a pre-shared-key (you will need this for the ASA config!) The sample requires that ASA devices use the IKEv2 policy with access-list-based configurations, not VTI-based. Currently I have a main office connected through WAN links with five branches. Not sure about whether later version supports OSPF or EIGRP. Ideally, you want to use the strongest authentication and encryption algorithms the peer can support. (And I work for a cloud provider, (that isnt Azure!)). Cisco ASA firewalls are usually used as border network devices connecting the Enterprise network with the ISP and hence the Internet. ASA supports policy-based VPN with crypto maps in version 8.2 and later. Configure a crypto map and apply it to the outside interface, which contains these components: The peer IP address The defined access list that contains the traffic of interest The IKEv2 phase 2 IPSec Proposal The phase 2 IPSec lifetime in seconds An optional Perfect Forward Secrecy (PFS) setting, which creates a new pair of Diffie-Hellman keys that are used in order to protect the data (both sides must be PFS-enabled before Phase 2 comes up)Microsoft has published information that conflicts with regard to the particular phase 2 IPSeclifetime and PFSattributes used by Azure. If source traffic is absent, verify that your sender is properly routing to the ASA. Give the tunnel a name > Site-to-Site IPSec > Select your Local Network Gateway (ASA) > Create a pre-shared-key (you will need this for the ASA config!) The interface configuration is self-explanatory, ASA has two interfaces, one for the Server and another one for the Internet. Success rate is 0 percent (0/5) Step 7. Thank you for this article, one question. But no proxy-IDs aka traffic selection aka crypto map. Notify me of follow-up comments by email. lifetime seconds 86400, tunnel-group 2.2.2.2 type ipsec-l2l Can I use the same 169.254.225.0/30 subnet on the the VTI interface of my 2nd, 3rd and 4th ASAs when setting up the route-based VPN to the same Azure VNet? Hence, its time for an update: This is my setup for this tutorial: (Yes, public IPv4 addresses behind the Forti.). auth: null, nameif tunnel-int Step 6. Do I need to do NAT Exemption? set ip6-send-adv enable Step 9. Choose the Encryption Domain/Traffic Selectors/Protected Networks. Back on the IPSec tab, configure the desired Lifetime Duration and Size. Your billing info has been updated. Step 14. There are a few ASA commands that you can use to verify the tunnel status. In that case would you still need to use SLA to alter the route or would the interface go down with a loss of connectivity to Azure and fail down to the next higher cost route? SK_ar: Step 8. These cookies do not store any personal information. name: KG-Main Great! Step 5. When using StackWise Virtual, What if I tell you that configuring a site-to-site VPN between Palo Alto and ASA is easier than you may, Overview Run debugs to view the tunnel negotiation process and identify where and if a failure occurs. Register . On the other hand, Route-Based VPNs are used to build only Site-to-Site or Hub-and-Spoke VPN topologies. That's all we need to configure, please remember the phase-1 and phase-2 parameters should match on both sides for a successful VPN connection. Configured Site to Site IPsec VPN tunnels to peer with different clients and each of client having different specifications of Phase 1 and Phase 2 policies using Cisco ASA 5500 series firewalls. Configuring Site-to-Site IPSec IKEv2 and IKEv1 VPN On a Single Cisco ASA Firewalls Running IOS - Studocu configuring ipsec ikev2 and ikev1 vpn on single cisco asa firewalls running ios version overview in the previous article you have seen how to configure ipsec DismissTry Ask an Expert Ask an Expert Sign inRegister Sign inRegister Home This is the configuration that will allow you to define the pre-shared key with the particular remote peers. The information that conflicts IKEv2 attribute from Microsoft is, protocol esp encryption {des | 3des | aes | aes-192 | aes-256 | aes-gcm | aes-gcm-192 | aes-gcm-256 | aes-gmac | aes-gmac-192 | aes-gmac-256 | null}, the particular phase 2 IPSec encryption and integrity attributes used by Azure. On the IKEV1 IPsec Proposal window, add your new IPsec policy to the Selected Transform Sets section and click OK . interface: port1 3 This website uses cookies to improve your experience while you navigate through the website. Have you had a chance to test or know if this is feasible? "route based" VPN with Cisco ASA I saw an discussion in CCIE Security study group, if it is possible to build a vpn between a cisco asa and cisco router with VTI interface and ipsec. First step in starting your own homelab is to install the hypervisor on your computer. Your email address will not be published. Under your copy and paste config you have all the changes highlighted in red. The connection uses a custom IPsec/IKE policy with the UsePolicyBasedTrafficSelectors option, as described in this article. dst: 0:0.0.0.0/0.0.0.0:0 Specify the name of the policy and choose the desired Encryption, Hash, Diffie-Hellman Group, Lifetime, and Authentication Method, and click Save . This can be a good topic for new article . If there are no Subnets behind the ASA (everything is NATed), what should I enter on Azure side to address space field? . We're setting up a VPN link to a 3rd party provider (a financial clearing broker) that uses a Cisco ASA on the other side in order to exchange trade clearing messages via FIX protocol (a TCP-based protocol for financial transactions). Step 2. Navigate to the IPsec tab, choose Static on the Crypto Map Type checkbox. The attributes listed are provided best effort fromthis publicly available Microsoft document. The advantage of Easy VPN is that you don't have to worry about all the IPSEC security details on the client side. I can switch the order of the address spaces, the first one in the list will get generated with the traffic selectors for the tunnel. Required fields are marked *. Create a tunnel group under the IPsec attributes and configure the peer IP address and the IKEv2 local and remote tunnel pre-shared key: Step 7. Step 17. You can now use TLS 1.3 to encrypt remote access VPN connections. tunnel-group 2.2.2.2 ipsec-attributes ReferencethisCisco documentfor full IKEv1 on ASA configuration information. Hi, Not yet but Never say Never, it depends what gets thrown at me. Support for FTD 6.7 has been added as part of firestarter request. 2022 Cisco and/or its affiliates. The sample configuration connects a Cisco ASA device to an Azure route-based VPN gateway. Phase 2 IPSecattribute information from Microsoft that conflicts isvisible here. Now create the VTI (Virtual Tunnel Interface) Note:40.115.49.202 is the public IP address of the Virtual Network Gateway in Azure. Child sa: local selector 0.0.0.0/0 255.255.255.255/65535 I have a routed VPN set up between a FG and ASA 5525. Route-based VTI VPN allows dynamic or static routes to be used where egressing traffic from the VTI is encrypted and sent to the peer, and the associated peer decrypts the ingress traffic to the VTI. I would like to give a direct link from each branch to the Azure subnet, which I could do by following your article. Step 10. set dhgrp 21 If reply traffic from Azure is seen, then the VPN is properly built and sends/receives traffic. protocol esp integrity sha-512, crypto ipsec profile ipsec-prop-vpn Using VTI eliminates the need of configuring static crypto maps and access lists. The static route on the ASA needs an IP address as the gateway. If ike-common debugs show the crypto process is triggered, debug the IKE configured version to view tunnel negotiation messages and identify where the failure occurs in tunnel-building with Azure. Encr: AES-GCM, keysize: 256, Hash: N/A, DH Grp:21, Auth sign: PSK, Auth verify: PSK Phase 2 IPSecattribute information from Microsoft that conflicts is. This article will deal with Route Based, for the older Policy Based option, see the following link; Microsoft Azure To Cisco ASA Site to Site VPN. Navigate to the FMC dashboard > Devices > VPN > Site to Site. On the Create new VPN Topology window, specify your Topology Name, check the IKEV1 protocol checkbox and click on the IKE tab. ), we have IKEv2 running everywhere and enhanced security proposals. Can be used with Cisco ASA OS (pre 8.4) IKEv1 only. Type the manual pre-shared key on the Key andConfirm Key text fields. On the Create New VPN Topology window you can see now both nodes with their correct traffic selectors/protected networks. Step 15. These cookies will be stored in your browser only with your consent. This command allow for Outside interface talk to net resources in Azure but this wont work for me. In this post I will cover all the steps necessary to install ESXi on your computer, Configure Policy-Based and Route-Based VPN from ASA and FTD to Microsoft Azure. set proposal aes256gcm-prfsha512 The ASA VPN module is enhanced with a new logical interface called Virtual Tunnel Interface (VTI), used to represent a VPN tunnel to a peer. Policy-based: These are recommendations from Azure. For further clarification contact Microsoft Azure support. Welcome back! Create a Site-to-Site policy. Check your VPN device specifications. Specify the security parameters in the crypto IPsec ikev2 ipsec-proposal configuration mode: protocol esp encryption {des | 3des | aes | aes-192 | aes-256 | aes-gcm | aes-gcm-192 | aes-gcm-256 | aes-gmac | aes-gmac-192 | aes-gmac-256 | null}protocol esp integrity {md5 | sha-1 | sha-256 | sha-384 | sha-512 | null}. I dont know how true that is. It can contain multiple entries if there are multiple subnets involved between the sites.In Versions 8.4 and later, objects or object groups can be created that serve as containers for the networks, subnets, host IP addresses, or multiple objects. We need to of course enable IKEv2 on the WAN interface. (Azure must be configured for policy-based VPN. Thank goodness for that. With your virtual network selected >Subnets > +Gateway Subnet. If ENCRYPT:DROP seen in packet-tracer. About this method, is there any chance to connect with Radius in Azure using Route based VPN? This is one of many VPN tutorials on my blog. Let's start with our new task - creating our first VM and setting it up for future use. created: 453s ago set dhgrp 21 One inbound SA with SPI 0x9B60EDC5 and one outbound SA with SPI 0x8E7A2E12 are installed as expected. For further clarification contact Microsoft Azure support. It should be limited to necessary traffic only! You also have the option to opt-out of these cookies. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. >>This can be a good topic for new article. ), For IKEv2 route-based VPN that uses crypto map on ASA with policy-based traffic selectors: ASA code version 8.2 or later configured with a crypto map. Make sure all running tasks and deployments are complete before continuing. It doesnt need one. More than 6 years ago (!) All rights reserved. You've successfully subscribed to Packetswitch. Last thing to do is to create routes for remote networks to point to the VPN tunnel: In this blog post we will go through the Debian Linux installation and basic setup process. Maybe I just have to shift the way I think about VPN tunnels to Azure. ForFTD, further information on how to configure VTIs can be found here; For IKEv2 route-based VPN that uses VTI on ASA: ASA code version 9.8(1) or later. This is accomplished in the Azure portal via PowerShell script deployment to implement an option that Microsoft calls UsePolicyBasedTrafficSelectors as explained here: https://docs.microsoft.com/en-us/azure/vpn-gateway/vpn-gateway-connect-multiple-policybased-rm-ps. It was a long-due release especially if you are working with multi-vendor VPNs. I am using a Fortinet FortiWiFi FWF-61E with FortiOS v6.2.5 build1142 (GA) and a Cisco ASA 5515 with version 9.12(3)12 and ASDM 7.14(1). Is it possible to setup an active-active azure vpn gateway with a single on-prem ASA? The gateway_ip needs to be any IP address (existent or non-existent) on the tunnel interface subnet, such as 169.254.0.2. The information that conflicts phase 2 IPSecattribute from Microsoft is, the particular phase 2 IPSeclifetime and PFS attributes used by Azure. One popular scenario therefore is to route some traffic to ISP1 and some other traffic to ISP2. There is also a valid child SA built for encrypted traffic to flow over. Configure the ISAKMP policy or Phase 1 parameters with the creation of a new one. With VPNs into Azure you connect to a Virtual Network Gateway, of which there are TWO types Policy Based, and Route Based. Richard J Green: Azure Route-Based VPN to Cisco ASA 5505 Kasperk.it: Cisco ASA Route-Based Site-to-Site VPN to Azure PeteNetLive: Microsoft Azure To Cisco ASA Site to Site VPN What I found is a difference in the base ASA software requirements. Note that the NAT exempts traffic (no translation takes effect). set ike-version 2 Let's connect to R1 and start the configuration . Step 2: Configuring a VPN policy on Site B Cisco ASA Firewall Step 3: How to test this scenario. src: 0:0.0.0.0/0.0.0.0:0 Step 4. You've successfully signed in. I have set few routed VPNs to Azure using other solutions such as Cisco routers and Palo Altos. Yes it would work if you put an 10.0.200.0/29 address on it also, its not really an Azure thing its more a VTI/GRE thing. Click the edit pencil icon from the IKEV1 IPsec Proposals at the Transform Sets option. IKEv2 attribute information from Microsoft that conflicts isvisible here. It finds a match and then knows it needs to send the packet in a tunnel to the remote peer 195.17.10.10. First of all let's apply some good practice config's to make this tunnel a little more stable and perform better. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Works! Verify IPsec SA is installed and encrypts traffic with the use of show crypto ipsec sa . Step 3. Note: The phase 1 IKEv1 attributes listed are provided best effort from this publicly available Microsoft document. You are using 169.254.225.0/30 on ASA and 10.0.200.0/29 on the Azure end. Verify the phase 2 IPSec security association has built with show crypto ipsec sa peer [peer-ip] . Hello, ikev2 local-authentication pre-shared-key *****, Session-id:71467, Status:UP-ACTIVE, IKE count:1, CHILD count:1, Tunnel-id Local Remote Status Role If your network is live, ensure that you understand the potential impact of any command. Step 11. Digvijay Prasad worte, that this is possible, Pavol Toman wrote, that he labbed it and it didn't work. Add an IPSec profile that specifies: Note: Microsoft has published information that conflicts with regard tothe particular phase 2 IPSeclifetime and PFS attributes used by Azure. SHA-1 or MD5 are considered weak and not recommended to use in a production environment. No policy maintenance Unlike Policy-based VPN, there will be no policy maintenance in Route-based VPN. But opting out of some of these cookies may affect your browsing experience. Step 19. set allowaccess ping tunnel destination 2.2.2.2 Equipment Used in this LAB: ASA 5510 - Cisco Adaptive Security Appliance Software Version 8.0 (3) Cisco Router 2801 - C2801-ADVIPSERVICESK9-M Version 12.4 (9)T4 Scenario: The attributes listed are provided best effort from, . The attributes listed are provided best effort fromthis publicly available Microsoft document. Note: Microsoft has published information that conflicts with regards tothe particular phase 2 IPSec encryption and integrity attributes used by Azure. ;(. Hi Dave, no in the next sentence, I mention VTIs and tunnel groups. Adding some packets: RARP, SNAP, MPLS & More. Route-based:The encryption domain is set to allow any traffic which enters the IPSec tunnel. protocol esp encryption aes-gcm-256 version: 2 Create a new policy. > Select your Resource Group > OK. Configure the Cisco ASA for 'Policy Based' Azure VPN Then, click on Save . It can contain multiple entries if there are multiple subnets involved between the sites.In Versions 8.4 and later, objects or object groups can be created that serve as containers for the networks, subnets, host IP addresses, or multiple objects. For a site-to-site IKEv2 Route Based VPN on ASA code, follow this configuration. Cisco ASA Route-Based (VTI) VPN Example. You are routing the traffic to Azure, the fact you are encrypting it is neither here nor there. Then i should choose outside interface. For further clarification, contact Microsoft Azure support. This coversthe, (more modern) Route based VPN to a Cisco ASA thats using a VTI (Virtual Tunnel Interface). As a reminder, Oracle provides different configurations based on the ASA software: 9.7.1 or newer: Route-based configuration (this topic) 8.5 to 9.7.0: Policy-based configuration Can you please share how to add/update ike and ipsec parameters like AES, SHA and DH group via resource.azure.com portal? Route-based IPSec uses an encryption domain with the following values: Source IP address: Any (0.0.0.0/0) Destination IP address: Any (0.0.0.0/0) Protocol: IPv4 If you need to be more specific, you can use a single summary route for your encryption domain values instead of a default route. Cisco Adaptive Security Appliance (ASA) supports route-based VPN with the use of Virtual Tunnel Interfaces (VTIs) in versions 9.8 and later. Step 18. IKE SA created: 1/1 established: 1/1 time: 190/190/190 ms group 21 24 To enable this connectivity, your on-premises policy-based VPN devices must support IKEv2 to connect to the Azure route-based VPN gateways. If ENCRYPT: ALLOW seen in packet-tracer. set remote-ip 169.254.0.249 255.255.255.252 ESP spi in/out: 0x75d65f1e/0x9f0257a9, main# ping 169.254.0.249 I thought about using RRI at some point, the thing is that I found that this is not possible when using route-based VPN tunnels. ikev2 remote-authentication pre-shared-key ***** Ive not set this up so I cant comment, but Ill open it up, Ive heard that this is possible and Outside interface should be choosen. You can perform a capture on the outside interface to verify that encrypted packets are sent from ASA and encrypted responses are received from Azure. Referencethis Cisco documentfor full ASA VTI configuration information. The tunnel comes up but there is no data received on the FG side of the tunnel. ACL needed to allow traffic between local networks. Cisco ASA now supports Virtual Tunnels Interfaces (After version 9.7(1)). It is also necessary to create appropriate ACLs on both ASAs to allow traffic from between local networks (192.168.10.0/24 for ciscolab-asa-01 and 192.168.20.0/24 for ciscolab-asa-02): Step 2.2. Route-based VTI . Cisco Adaptive Security Appliance (ASA) supports route-based VPN with the use of Virtual Tunnel Interfaces (VTIs) in versions 9.8 and later. (Azure must be configured for route-based VPN withUsePolicyBasedTrafficSelectors.). Type escape sequence to abort. Thanks for your reply. For further clarification contact Microsoft Azure support. Receive notifications of new posts by email. This is the way traditionally VPNs have been done in Cisco ASA, in Cisco Firewall speak its the same as If traffic matches the interesting traffic ACL, then send the traffic encrypted to the IP address specified in the crypto map.. The connection uses a custom IPsec/IKE policy with the UsePolicyBasedTrafficSelectors option, as described in this article. Cisco StackWise Virtual allows two physical switches to operate as a single logical virtual switch. edit KG-Main Ensure that the VPN traffic is not subjected to any other NAT rule. Ive not tested, but I have had some feedback where its suggested the ASA needs two outside IPs? Step 3. tunnel-group 2.2.2.2 general-attributes As time flies by, ASA is now able to terminate route-based VPN tunnels (which is great! So where is 169.254.225.2 assign to? I think there is a wrong title just before the phrase Im using 9.9(2)36, VTIs are supported on 9.7, The title reads Configure the Cisco ASA for Policy Based Azure VPN but it should be Route Based. Overview Remember that a Cisco ASA firewall is by default capable to support IPSEC VPN but a Cisco Router must have the proper IOS software type in order to support encrypted VPN tunnels. The default route is pointing to the ISP router with a static route. ip address 169.254.0.249 255.255.255.252 Great article as always! All Services > Local Security Gateway > Create Local Security Gateway > Name it > Supply the public IP > Supply the Subnet(s) behind the ASA > Select your Resource Group > Create. On the FMC dashboard, click Deploy at the top-right pane, choose the FTD device, and click Deploy . Public IP: Create new unless you already have a space and give it a name. Also, from the main office I have a policy-based VPN tunnel with Azure from an ASA. It was resolved by choosing any. set ikev2 ipsec-proposal AES-256-GCM Create a tunnel group under the IPsec attributes and configure the peer IP address and the tunnel pre-shared key. NO (Unless you were hair pinning a traditional VPN from another ASA into this tunnel, or an AnyConnect client VPN session.). Personally Id use an SLA, but you go with what you know! The information that conflicts IKEv2 attribute from Microsoft is visible here. Navigate to the Protected Networks section and click on the green plus button to add a new object. tunnel source interface outside Step 5. auth: null If it works it works, but I wish it had to follow some networking logic. I am curious if you assign IP address on the ASA that is on 10.0.200.0/29 if the tunnel would work. Yes its just a standard Hairpin from one to the other https://www.petenetlive.com/KB/Article/0000040. The last thing to do, is tell the firewall to route the traffic for Azure though the VTI.Note: The last octet in the destination IP is different from the VTI IP! This is an expected condition when you first bring the tunnel up. This is a combination of security protocols and algorithms that define the way the VPN peers protect the actual traffic. Route-based VPN is an alternative to policy-based VPN where a VPN tunnel can be created between peers with Virtual Tunnel Interfaces. Click OK on the Add Endpoint window. To test VPN, let's initiate some traffic from the Client to the server to verify that the tunnel is working. The attributes listed are provided best effort fromthis publicly available Microsoft document. tunnel mode ipsec ipv4 Step 21. The tunnel works great, so long as the ASA is the Initiator. Is there any walkaroud or should I just reconfigure tunnel for Policy Based? crypto-map vpnset 1 set peer 195.17.10.10 So when the ASA receives traffic from a 192.168.10.x client it checks this traffic against any crypto-map acls. If you wanted to allow Anyconnect users access to resources in Azure from the ASA, would your NAT exemption be an outside,outside like a traditional hairpin, or would you need to specify the outside to tunnel nameif? Cisco Firewall Service Enterprise Router Modules, Cards & Adapters . If I remember correctly, Cisco introduced Virtual Tunnel Based (VTI) VPN back in 2017 with a 9.7.1 code base. Cisco Asa Site To Site Vpn Nat Configuration - Read. Procedure: To manually configure a VPN Policy using IKE with Preshared Secret, follow the steps below: The below screen shot of SonicWall with basic configuration LAN and WAN. end, vd: root/0 Route-based VPN allows determination of interesting traffic to be encrypted or sent over VPN tunnel and use traffic routing instead of policy/access-list as in Policy-based or Crypto-map based VPN. edit KG-Main I am doubtful about that management-access is a command thats reserved for certain things, and Ive never had tones it to the outside interface? I have connection to this machine from on-premise LAN. Phase 2 IPSecattribute information from Microsoft that conflicts isvisible here. Cisco Secure Firewall or Firepower Threat Defense (FTD) managed by FMC (Firepower Management Center) supports route-based VPN with the use of VTIs in versions 6.7 and later. These are the VPN parameters: You can do the configuration through the GUI: or through the CLI: (incl. inbound local-gateway: 2.2.2.2:4500 (static) This document describes the concepts and configuration for a VPN between CiscoASA and Cisco Secure Firewall and Microsoft Azure Cloud Services. Create a static route to point traffic into the tunnel. The cloud vendor is not able to reach us when they initiate the connection? Create an access list that defines the traffic to be encrypted and tunneled. Ensure that there are no access-list drops seen. Click Create Local Network Gateway First of all, I will create the ISKMP Phase 1 policy for remote router R1. Worked perfectly as expected. access-group AZURE-VTI01_access_in in interface AZURE-VTI01. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Privacy Policy | Copyright PeteNetLive 2022, Microsoft Azure Route Based VPN to Cisco ASA, crypto ipsec ikev2 ipsec-proposal AZURE-PROPOSAL, protocol esp integrity sha-384 sha-256 sha-1, ip address 169.254.225.1 255.255.255.252, tunnel protection ipsec profile AZURE-PROFILE, tunnel-group 40.115.49.202 type ipsec-l2l, tunnel-group 40.115.49.202 general-attributes, tunnel-group 40.115.49.202 ipsec-attributes, ikev2 local-authentication pre-shared-key supersecretpassword, ikev2 remote-authentication pre-shared-key supersecretpassword, route AZURE-VTI01 10.0.0.0 255.255.255.0 169.254.225.2 1, AZURE-VTI01 10.0.0.0 255.255.255.0 169.254.225.2 1. SA If so, how does that relate to the behavior of flooding the traffic to a non-existent next hop of 169.254.1.2 ? Define the Node B endpoint, which in this example, is the Azure endpoint. All branches can reach the Azure subnet since the encryption domain has the on-prem networks summarized with a /16 prefix. This means that any trafficrouted intothe IPSec tunnel is encrypted regardless of the source/destination subnet. In my case, it is the FortiGate's IP address of 192.168.200.2 and the pre-shared key is fortigate. But my articles are made from the stuff Im working on. Verify no NAT translation occurs on the VPN traffic. Microsoft Azure supports route-based, policy-based, or route-based with simulated policy-based traffic selectors. That is a good question, I would use reverse route injection on all the smaller sites, so if the tunnel is up, they will use their WAN connection, then have static routes at each site with a higher metric/cost pointing to the WAN connection at the main site. Using VTI does away with the need to configure static crypto map access lists and map them to interfaces. Step 1: Configuring a VPN policy on Site A SonicWall. There are two methods to define the VPN encryption domains: route-based or policy-based traffic selectors. next, config vpn ipsec phase1-interface For some reason my ASA needs to talk into the tunnel. ), ForIKEv1 policy-based VPN that uses the crypto map on ASA and FTD: ASA code version 8.2 or later and FTD 6.2.0 or later. At on-prem level it would be no trouble avoiding routing loops the trick part is to accomplish this at the Azure routing level. The next step is to create a tunnel interface and attach the proposal we created in the previous step. The information that conflicts phase 2 IPSecattribute from Microsoft isvisible here. If you already have a policy then you don't need to create one. With a route based VPN, all traffic sent out or received via the tunnel interface will be VPN traffic (and ttherefor encrypted). amazing article. selectors remote selector 0.0.0.0/0 255.255.255.255/65535. Here, an IKEv1 SA built with ASA as the initiator to peer IP 192.168.2.2 with a leftover lifetime of 86388 seconds is shown. On the ASA the first thing to make sure is that the Tunnel Interface is up! direction: responder Now create a group-policy and a tunnel-group, this is where you enter the pre-shared-key you created above. Create the remote traffic selector object. I have a question though. Step 1. If the VPN phase shows ENCRYPT: ALLOW , the tunnel is already built and you can see IPSec SA installed with encaps. 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